वर्गमूल सर्पिल में \( \sqrt{20} \) और \( \sqrt{21} \) बनाने वाले लगातार दो त्रिज्या-खंडों के वर्गों का अंतर कितना है?
In the square root spiral, what is the difference between the squares of two consecutive radii forming \( \sqrt{20} \) and \( \sqrt{21} \)?
Explanation opens after your attempt
D. (1)
Concept
The difference of squares is (21-20=1). This difference stays constant at each consecutive step.
Why this answer is correct
The correct answer is D. (1). The difference of squares is (21-20=1). This difference stays constant at each consecutive step.
Exam Tip
वर्गों का अंतर (21-20=1) है। यही अंतर हर लगातार चरण में स्थिर रहता है।
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